Resistivity response to the porosity and permeability of low rank coal

Wang; Gang; Qin; Yong; Shen; Jian; Hu; Yuanyuan; Liu; Donghai; Zhao; Long

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Resistivity response to the porosity and permeability of low rank coal

机译：低阶煤孔隙度和渗透率的电阻率响应

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摘要

Laojunmiao coal samples from the eastern Junggar basin were studied to understand the relationship between coal resistivity and the physical parameters of coal reservoirs under high temperatures and pressures.Specifically,we analysed the relationship of coal resistivity to porosity and permeability via heating and pressurization experiments.The results indicated that coal resistivity decreases exponentially with increasing pressure.Increasing the temperature decreases the resistivity.The sensitivity of coal resistivity to the confining pressure is worse when the temperature is higher.The resistivity of dry coal samples was linearly related to φ~m.Increasing the temperature decreased the cementation exponent(m).Increasing the confining pressure exponentially decreases the porosity.Decreasing the pressure increases the resistivity and porosity for a constant temperature.Increasing the temperature yields a quadratic relationship between the resistivity and permeability for a constant confining pressure.Based on the Archie formula,we obtained the coupling relationship between coal resistivity and permeability for Laojunmiao coal samples at different temperatures and confining pressures.

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《矿业科学技术学报：英文版》 |2016年第002期|P.339-344|共6页
作者
Wang; Gang; Qin; Yong; Shen; Jian; Hu; Yuanyuan; Liu; Donghai; Zhao; Long;
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作者单位

[1]School of Resources and Geosdences, China University of Mining and Technology, Xuzhou 221116, China;

[2]Key Lab of CBM Resources and Dynamic Accumulation Process, Ministry of Education of China, Xuzhou 221116, China;

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原文格式 PDF
正文语种 CHI
中图分类其他;
关键词
低煤阶煤; 电阻率; 渗透率; 孔隙度; Archie公式; 准噶尔盆地东部; 压力指数; 储层物性参数;

机译：低煤阶煤;电阻率;渗透率;孔隙度;Archie公式;准噶尔盆地东部;压力指数;储层物性参数;

Resistivity response to the porosity and permeability of low rank coal

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